Change formatting of function expressions without names

No spaces between 'fun' and value parameter list

idea/testData/formatter/FunctionExpression.kt

@@ -1,18 +1,21 @@
 val a = fun () {}
 val b = fun test() {}
 
-val c=fun(){}
-val c=fun()=4
+val c=fun  (){}
+val c=fun  ()=4
 
-val c=fun()=
+val c=fun  ()=
         4
 
 val c   =   fun()   {}
-val c   =    fun()    =  4
+val c   =    fun   ()    =  4
 
 fun test() = fun test() = 4
 
 fun test() {
+    test(fun
+                 () {
+    })
     test(fun test() {})
     test(fun test() = 5)